Observe the following statements i. The dipole moment of NH ₃ is higher than the dipole moment of NF ₃ . ii. The dipole moment of chloroform is zero. iii. Covalent bond character in NaCl is more compared to CuCl .

Step-by-step solution

Only statement (i) is correct. - i. The dipole moment of ( NH ₃ ) is higher than the dipole moment of ( NF ₃ ). This is correct. In ( NH ₃ ), the bond dipoles of the three ( N - H ) bonds and the lone pair on nitrogen all point in the same general direction, adding up to a larger net dipole moment. In (N F₃ ), the bond dipoles of the three N-F bonds point towards the highly electronegative fluorine atoms, while the lone pair dipole points away. These dipoles oppose each other, resulting in a much smaller net dipole